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Re:给2组数据大牛们。。

Posted by yl4448417 at 2015-07-04 20:10:17 on Problem 3352
In Reply To:Re:给2组数据大牛们。。 Posted by:yl4448417 at 2015-07-04 20:09:11
应该是2吧,如果去掉1,2这条边就无法与2的集合相连了

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